package org.apache.maven.model.resolution;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * Signals an error when resolving the path to an external model.
 * 
 * @author Benjamin Bentmann
 */
public class UnresolvableModelException extends Exception {

  /**
   * The group id of the unresolvable model.
   */
  private final String groupId;

  /**
   * The artifact id of the unresolvable model.
   */
  private final String artifactId;

  /**
   * The version of the unresolvable model.
   */
  private final String version;

  /**
   * Creates a new exception with specified detail message and cause.
   * 
   * @param message The detail message, may be {@code null}.
   * @param groupId The group id of the unresolvable model, may be {@code null}.
   * @param artifactId The artifact id of the unresolvable model, may be {@code null}.
   * @param version The version of the unresolvable model, may be {@code null}.
   * @param cause The cause, may be {@code null}.
   */
  public UnresolvableModelException(String message, String groupId, String artifactId, String version, Throwable cause) {
    super(message, cause);
    this.groupId = (groupId != null) ? groupId : "";
    this.artifactId = (artifactId != null) ? artifactId : "";
    this.version = (version != null) ? version : "";
  }

  /**
   * Creates a new exception with specified detail message.
   * 
   * @param message The detail message, may be {@code null}.
   * @param groupId The group id of the unresolvable model, may be {@code null}.
   * @param artifactId The artifact id of the unresolvable model, may be {@code null}.
   * @param version The version of the unresolvable model, may be {@code null}.
   */
  public UnresolvableModelException(String message, String groupId, String artifactId, String version) {
    super(message);
    this.groupId = (groupId != null) ? groupId : "";
    this.artifactId = (artifactId != null) ? artifactId : "";
    this.version = (version != null) ? version : "";
  }

  /**
   * Gets the group id of the unresolvable model.
   * 
   * @return The group id of the unresolvable model, can be empty but never {@code null}.
   */
  public String getGroupId() {
    return groupId;
  }

  /**
   * Gets the artifact id of the unresolvable model.
   * 
   * @return The artifact id of the unresolvable model, can be empty but never {@code null}.
   */
  public String getArtifactId() {
    return artifactId;
  }

  /**
   * Gets the version of the unresolvable model.
   * 
   * @return The version of the unresolvable model, can be empty but never {@code null}.
   */
  public String getVersion() {
    return version;
  }

}
